Composition pulley



INVENTR.

FeEoEE/GK S7-vnf' COMPOSITION PULLEY Filed Nov.

Sept. 9 1924.

Patented Sept. 9, 1924.

UNITED STATES PATENT OFFICE. Y,

FREDERICK A'. STOLTE, OF INDIANAPOLIS, INDIANA.

coMPosrrIo-N PULLEY.

Application filed November 5, 1921. Serial No. 513,122.

To all whom t may concern.'

Be it known that I, Fnnnnnrcx A. SToL'rn, a citizen of the UnitedStates, residing at Indianapolis, in the county of Marion and State ofIndiana, have invented certain new and useful Improvements inComposition Pulleys, of which the following is a specification. y

rihis invention relates to composition pulleys, and the prime feature.of the invention is the combining with a metal boxing or core of afibrous body composition, said fibrous composition being composed ofcomminuted particles' which are vtreated with an adhensive substance forholding them in compact formatio-n.

And a further feature of the invention is the provision of a fabricfacing for the belt receiving surface of the pulley.

Other objects and advantages will be hereinafter vmore fully set forthand pointed out in the accompanying specification.

In the accompanying drawings,

Figure 1 is an end elevation of the pulley with parts broken away, and

Figure 2 is a side elevation of the pulley partly in section.

Referring to the. drawings, l indicates the boxing or core which ispreferably vconstructed of metal and has at each end thereof a Harige 2,one of which is preferably integral with the boxing while the otherflange is slipped over the end of the boxing, the removable flange.being secured or fixed in position by extending tie rods 3 transLversely through said flanges. v

Built around the boxing l and encasing the tie rods 3 is a bodystructure 4' which is composed of comminuted fibrous material preferablysawdust, the' particles of sawdust being treated with an adhesive'substance and then subjected to pressure for forming the fibrousparticles into a concrete unitary structure, the strength and wearingqualities of the body portion being substantially equal to that of ametal pulley, while the cost of production and weight of the pulley isvery materially decreased.

By constructing the bearing surface for a belt of a fibrous substance,the belt will have a greater tendency to adhere to the surface than whena metal pulley is used, consequently a more uniform drive is obtainedand the wear and tear on the belt reduced to a minimum.

If preferred, a covering 5 of fabric may be introduced around the bodystructure l and secured thereto in any suitable manner, preferably byadhesion, and in some instances the fabric may be embeddedin the face ofthe' body structure, thisforml of covering serving to practicallyentirely eliminate slippage of the belt and presenting a mo-re pliablewearing surface tothe face of the belt.

It will be understood, o-f course, that various forms of pulleysmay beconstructed and the same results accomplished, but in the presentinstance the body structure 4- is shownas of greater diameter than thediameter yof the flanges 2, flanges 2 are shown as embedded in the endsof the body structure and having their outer faces flush with the endfaces of the body. The present form of pulley likewise shows thecovering 5 of fabric. of less length than the length of the pulley sothat by embedding the fabric in the face of `the body structure, thematerial 'of `which the body .structure is composed will abutV againstand protect the edges of the covering.

Having thus fully described my said invention,'what I claim as new anddesire to secure by Letters Patent, isf:

A pulley comprising a metal'core having an integral radially extend-.ingflange at one end, a separate flange mounted on its other end, ay moldedfibrous body on said core extending over said flanges and having itsends flush with the ends of,r the core, tie rods extending axiallythrough said fibrous body and connecting said flanges for interand thelocking the fibrous body and flanges together and for securing themovable flange in position around the end of the core, and a fabriccovering secured to the peripheral face of Vthe body the edges ofthesaid fabric covering being substantially flush,"

with the peripheral face of the pulley, sub-- stantia-lly as set forth.f

In witness whereof, I have hereunto set my hand and seal atIndianapolis, Indiana,

this 2nd day of November, A. D. nineteenl hundred and twenty-one.

. FREDERICK A. sToLTE. [1.; 8.]

Witnesses:

F. R. KIMMEL, CAREY S. FRYE.

